# example9_7_test.py

'''...'''

'''
>>> from example9_7 import Vector2d
>>>
>>> v1 = Vector2d(3, 4)
>>> v2 = Vector2d(3.1, 4.2)
>>> hash(v1), hash(v2)
(7, 384307168202284039)
>>> set([v1, v2])
{Vector2d(3.1, 4.2), Vector2d(3.0, 4.0)}
'''

